CITY OF LONGMONT WASTEWATER TREATMENT PLANT
Quick Summary
- •Currently out of compliance in at least one environmental program (CAA, CWA, or RCRA).
- •Assessed $0 in total penalties since records began.
- Address
-
501 E. 1ST AVENUE
LONGMONT, CO 80501
View on map ↗ - County
- BOULDER County
- Industry
- Utilities
- NAICS (North American Industry Classification)
- 221320
- Inspections
- 3 · last Apr 10, 2025
- Total Penalties
- $0 · last Sep 16, 2003
- Registry ID
- 110000528108
Compliance Status (Last 12 Quarters)
Number of calendar quarters, out of the last 12, in which this facility was in violation of its permit. Zero means no recorded violations in that program over the past three years.
Qtrs Non-Compliant
Qtrs Non-Compliant
Compliance Violations
Individual permit violations recorded by the EPA across air, water, and hazardous waste programs. Open violations are unresolved as of the most recent ECHO data update.
| Program | Type | Violation Date | Return to Compliance | Status |
|---|---|---|---|---|
| cwa | Schedule Event unachieved but reported | Jun 30, 2024 | Jan 21, 2025 | Resolved |
| cwa | Schedule Event unachieved and not reported | Jun 30, 2024 | Jan 21, 2025 | Resolved |
| cwa | Schedule Event reported late | Jun 30, 2024 | — | Open |
| cwa | Schedule Event achieved late but reported | Jun 30, 2024 | — | Open |
| cwa | Schedule Event unachieved but reported | Nov 30, 2016 | Nov 6, 2017 | Resolved |
| cwa | Schedule Event unachieved and not reported | Nov 30, 2016 | Nov 14, 2017 | Resolved |
| cwa | Schedule Event reported late | Nov 30, 2016 | — | Open |
| cwa | Schedule Event achieved late but reported | Nov 30, 2016 | — | Open |
| cwa | Permit Violations - Violation Specified in Comment | Aug 31, 1994 | Jan 24, 2000 | Resolved |
Discharge Limit Exceedances
Instances where this facility's reported discharge monitoring results exceeded its permitted limits under the Clean Water Act. Exceedance percentage shows how far over the permit limit the discharge was.
| Pollutant | Violation | Reported | Limit | Exceedance | Period | Status |
|---|---|---|---|---|---|---|
| Sulfide-hydrogen sulfide [undissociated] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.00 | +283% | Aug 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 47.00 mg/L | 45.00 | +4% | Dec 2015 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 72.00 mg/L | 45.00 | +60% | Dec 2015 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 170.00 mg/L | 45.00 | +278% | Nov 2015 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 130.00 mg/L | 45.00 | +189% | Oct 2015 | Open |
Enforcement Actions
Formal enforcement cases brought by the EPA or state agencies, including administrative orders and civil penalties assessed. Penalty amounts reflect what was formally assessed, not necessarily what was collected.